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Available-for-Sale Investments (Table Text Block) | 6 Months Ended
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Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract] |
Available-for-Sale Investments | Available-for-Sale Investments Available-for-sale investments at September 30, 2013 were as follows:
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses More than 12 Months |  | Gross Unrealized Losses Less than 12 Months |  | Estimated Market Value
|  | (Unaudited)
|  | (In thousands)
U.S. treasury securities and government obligations | $ | 28,048 | $ | 1,932 | $ | (3 | )$ | (293 | )$ | 29,684
U.S. government agency mortgage-backed securities |  | 44,735 |  | 2,772 |  | (4 | ) | (1,009 | ) | 46,494
Obligations of states and political subdivisions |  | 162,678 |  | 9,304 |  | (132 | ) | (1,916 | ) | 169,934
Corporate securities |  | 800,834 |  | 28,872 |  | (1,336 | ) | (22,474 | ) | 805,896
Mortgage-backed securities |  | 5,613 |  | 177 |  | (35 | ) | - |  | 5,755
Redeemable preferred stocks |  | 18,440 |  | 385 |  | (64 | ) | (312 | ) | 18,449
Common stocks |  | 37,356 |  | 2,171 |  | (1,291 | ) | (108 | ) | 38,128
| $ | 1,097,704 | $ | 45,613 | $ | (2,865 | )$ | (26,112 | )$ | 1,114,340
The table above includes gross unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position. We sold available-for-sale securities with a fair value of $103.3 million during the first six months of fiscal 2014. The gross realized gains on these sales totaled $3.2 million. The gross realized losses on these sales totaled $0.9 million. The unrealized losses of more than twelve months in the available-for-sale table are considered temporary declines. We track each investment with an unrealized loss and evaluate them on an individual basis for other-than-temporary impairments including obtaining corroborating opinions from third party sources, performing trend analysis and reviewing management's future plans. Certain of these investments may have declines determined by management to be other-than-temporary and we recognized these write-downs through earnings. There were no write downs in the second quarter or for the first six months of fiscal 2014 and 2013.

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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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